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Finding the Fourth Proportional to 38,739.60, 57,963.60 and 25,617.60

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Solution

The fourth proportional to 38,739.60, 57,963.60 and 25,617.60 is: 38,329.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,739.60 : 57,963.60 = 25,617.60 : x
  2. Step 2: Convert to fraction form
    38,739.60/57,963.60 = 25,617.60/x
  3. Step 3: Cross multiply
    38,739.60x = 57,963.60 × 25,617.60
  4. Step 4: Simplify right side
    38,739.60x = 1,484,888,319.36
  5. Step 5: Solve for x
    x = 1,484,888,319.36/38,739.60
  6. Step 6: Final answer
    x = 38,329.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.